by Gry Hasselbalch and Pernille Tranberg
First appeared in DailyDot 23rd October
BLOG: How come Facebook knows that I have a mother with Alzheimer’s, a woman asked the other day. She was sure that she hadn’t provided the social medium with such sensitive information. But when quizzed a bit further, she confirmed that she had googled the illness and been browsing the Alzheimer’s Association’s website. Both websites “gossip” about visitors’ behavior behind their back to other websites, including Facebook, via third-party cookies.